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3 years ago

Which of the following is the best example of a compression force?

Physics

2 answers:

d1i1m1o1n [39]3 years ago

7 0

I took the test and got B) the force of weight on a bicycle correct

Sergeu [11.5K]3 years ago

5 0

The best example of a compression force is the force of weight on a bicycle. The answer is letter B. A compression force is when the weight of the bicycle imposes a downward force to the ground and the ground imposes an upward force to the bicycle.

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HELP ASAP!!!!! ILL MARK YOU BRAINLIEST!

Julli [10]

Hello! Sorry this is a little late!

The answer to your question would best be option C, yes, because electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them.

I just took this test, and can 100% confirm this is the correct answer!

Hope this helps, and have a great day! :)

8 0

2 years ago

Read 2 more answers

Holes are being steadily injected into a region of n-type silicon (connected to other devices, the details of which are not impo

Tems11 [23]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is $J_n = -0.864 \ A/cm^2$

Explanation:

Generally for an n-type semiconductor the current density is mathematically represented as

$J_n = -q * d_p * \frac{d p_{n_o}}{d_w}$

Here $p_{n_o}$ is mathematically represented as

$p_{n_o} = \frac{n_i^2}{n_d}$

=> $p_{n_o} = \frac{(1.5*10^{10})^2}{10^{16}}$

=> $p_{n_o} = 2.25 *10^{4} \ cm^{-3}$

$d p_{n_o} = P_n0 - p_{n_o}$

From the diagram $P_n0 = 10^8 * p_{n_o}$

=> $P_n0 = 10^8 * (2.25 *10^{4} )$

$d p_{n_o} = 10^8 * (2.25 *10^{4} ) - 2.25 *10^{4}$

$d p_{n_o} = 2.25 *10^{12} cm^{-3}$

So from $J_n = -q * d_p * \frac{d p_{n_o}}{d_w}$

substitute

$1.60 *10^{-19} \ C$ for q and $w_2 =50 nm = 50*10^{-9} m = 5*10^{-6} cm$

and from the diagram $w_1 =0 \ cm$

$J_n = -1.60 *10^{-19} *12 * \frac{2.25 *10^{12} }{ 5*10^{-6} - 0 }$

$J_n = -0.864 \ A/cm^2$

6 0

2 years ago

A) How much does an 85g apple weight on the surface of the Earth? (gEarth = 9.8 m/s2)

liq [111]

Look at the attached picture⤴

Hope it will help u .

4 0

3 years ago

When two objects of different masses, different temperatures, and different sizes are placed in thermal contact, energy will alw

denpristay [2]

Answer:

a) from the hotter object to the cooler object

Explanation:

temperature moves by conduction, which is associated with the movement of atoms or molecules and the always move from hight temperatures to lower temperatures to attain thermal equilinrium of the system.

so when two objects are placed together and have different temperatures then the system is not in thermal equilibrium and to attain it, temperature can only move to coller object and not from the coller object according to thermodynamics.

6 0

2 years ago

When the k. E of

Ierofanga [76]

$\sqrt{2}$ Answer:

KE2 = 2 KE1

1/2 M V2^2 = 2 * (1/2 M V1^2)

V2^2 = 2 V1^2

V2 = $\sqrt{2}$ V1

Since momentum = M V the momentum increases by $\sqrt{2}$

8 0

3 years ago

Read 2 more answers